AIR CIRCUIT BREAKER
MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
The MTW1 series intelligent breaker is meticulously crafted for distribution networks operating at an AC frequency of 50Hz, making it an ideal choice for a rated voltage of 400V and 690V, delivering a robust rated current range from 400Ato 7500A. This breaker excels in distributing electrical energy while providing superior protection to circuits and power equipment against potential threats such as overloads, under-voltage conditions, short circuits and single-phase earth faults. With cutting-edge intelligent protection features and precise selective protection, this breaker dramatically enhances the reliability of your power supply, significantly reducing the likelihood of
unplanned power interruptions.The circuit breaker is engineered to withstand impressive impulse voltages up to8000V at an altitude of 2000 meters, and is versatile enough to accommodate higher altitudes with a maximum capability of up to 12000V).
This product conforms to the stringent requirements of GB14048.2 for low-voltage switchgear and control equipment, focusing specifically on low-voltage circuit breakers. It also adheres to the IEC60947-2 standards for low-voltage switchgear and controlling equipment Part 2: Low-voltage circuit breakers.
-Style: Drawer style
-Style: Fixed style
-Model Meaning
Pole number (4P indicates 4 Pole, 3P indicates 3 Pole)
Rated Current
Design code
Air Circuit Breaker
Enterprise code

-Control part: Elevate your operational experience with our superior advanced control system, ingeniously engineered to deliver unmatched precision and superb efficiency. This finely-tuned system promises seamless functionality and peak performance, consistently ensuring flawless operation and reliability.
Shunt
release |
Ue(v) |
AC 220,380/DC110,220 |
Energy-releasing (ON) electromagnet |
Us(v) |
AC 220,380/DC110,220 |
Under-voltage
release |
Ue(v) |
AC 220,380 |
Intelligent type electronic release |
Us(v) |
AC 220,380/DC110,220 |
Motorized operating
mechanism |
Us(v) |
AC 220,380/DC110,220 |
|
|
|
COPPER BAR
Expertly crafted from premium red copperelegantly silver plated material for enhanced durability
Exceptional heat dissipation performance ensures optimal efficiency
High corrosion resistance for longevity
Innovative widening and thickening techniques applied to copper bar size guaranteeing superior performance
Meticulously compliant with stringent industry standards
CONDUCTIVE SYSTEM
The precise number of contact pieces is expertly determined by the current load
The moving contact is meticulously crafted from copper plated with lustrous silver material
The moving contact is ingeniously engineered from silver dots, ensuring exceptional conductivity
-Internal components
Conductive parts include:
-Copper bars, precision contacts
Secondary control part highlights:
-Wiring terminals, advanced mechanisms, intelligent controllers, robust motors, high-quality coils, and current transformer
State-of-the-art Arc extinguishing section:
-interrupter
-Available in both fixed and drawer type construction for versatile and flexible application
Installation Instructions
-Securely installed inside the panel for optimal performance.
Fixed Type Installation:
The circuit breaker is meticulously secured onto the distribution cabinet or installation board and remains steadfastly immovable once positioned.
This configuration is brilliantly suited for applications that demand stability without frequent switching or routine maintenance.
Effortless installation and budget-friendly setup.
Drawout Type Installation:
The circuit breaker is expertly mounted on a withdrawable frame, facilitating effortless maintenance,streamlined testing,and convenient replacement of componentswith minimal disruption.
Perfectly tailored for environments that necessitate regular operation or frequent servicingfor seamless functionality.
Though installation might be intricate and costlier, it offers unparalleled adaptabilityto dynamic needs.
Plug-in Type Installation:
The circuit breaker integrates seamlessly with the busbar through a sophisticated plug-in mechanism, ensuring rapid deployment and swift replacement.
This approach is ideal for scenarios that necessitate swift replacements.
-Secondary Wiring Method
1 and 2: Seamlessly connect the intelligent controller for efficient operation.
27 and 28:Efficiently connect the undervoltage coil for reliable function.
29 and 30: Securely attach the shunt coil for precise control.
31 and 32:Firmly anchor the closed coils for optimal performance.
34 and 35: Reliably connect the energy storage motor to ensure consistent energy flow.
1. Mechanical Operation Test:
a. Evaluate the fluidity and efficiency of the circuit breaker's mechanical operations to ensure they are flexible and reliable.
b. Assess the execution of vital operational functions, including closing, opening, and energy storage.
2. Electrical Performance Testing:
a. Insulation Resistance Test: Utilize a megohmmeter to meticulously measure the insulation resistance of both main and auxiliary circuits, ensuring conformity to standards, typically ≥ 1M Ω.
b. Power Frequency Withstand Voltage Test: Systematically apply a rated power frequency voltage (e.g., 2500V/1min) to both main and auxiliary circuits to meticulously validate the insulation performance.
c. Contact Resistance Test: Precisely measure the contact resistance of the main contact to confirm it remains below the predefined threshold, typically at the micro-ohm level.
3. Protection Function Test:
a. Test the accuracy of action values and timing pertaining to protection features such as overload, short circuit, and ground fault.
b. Carefully verify the settings andfunctionality of the intelligent release device to ensure optimal performance.
Outer packaging:
To ensure unparalleled protection and strength for our products, we utilize robust and durable wooden boxes that are specifically designed to provide exceptional mechanical strength, safeguarding your investment during transit.
Our wooden crates are perfectly suited for accommodating large circuit breakers or for resilient international transportation, ensuring your products arrive in pristine condition.
Inner packaging:
To achieve maximum protection for each circuit breaker, we meticulously wrap it with high-quality buffer materials such as foam pad, bubble film or pearl cotton to effectively mitigate any vibration or collision during transportation, ensuring the integrity of the product.
For larger circuit breakers, we offer a sophisticated packaging solution with a layered design, allowing accessories like manuals, tools, and spare parts) to be conveniently and securely placed on the upper layer, ensuring perfect organization and accessibility.
Our production line
Mingtuo Electric Zhejiang Mingtuo Electric Technology Co., Ltd. stands as a beacon of innovation and reliability in both the domestic and global markets. Our multifaceted products are essential to the construction, industrial, and energy sectors. Revered by prestigious engineering projects, our solutions have garnered widespread trust and admiration from customers across the globe.
The company strictly adheres to its enduring commitment toputting customers first, ensuring top-notch quality, prioritizing exceptional service, and upholding an impeccable reputation.With an unyielding focus on innovation and advancement, the company showcases superior technical expertise, pioneering production processes, and a wealth of industry experience in research and development. Celebrated for its professional acumen and technological prowess, the company maintains a comprehensive suite of state-of-the-art production, testing, and inspection equipment, setting a benchmark in China.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For those seeking detailed insights into product specifications and breaking capacity, our attentive customer service team is ready to assist you with all the information you need.
Q: What is the MOQ? Do you support sample ordering?
A: We are pleased to accommodate an exceptionally low minimum order quantity of just 1 set and are fully committed to supporting sample ordering to perfectly align with your requirements.
Q: How long is the warranty period? How to apply for warranty?
A: Our products are backed by a solid warranty period ranging from one to two years, and applying for warranty is a seamless process that can be done effortlessly via our customer service.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We proudly hold CE and RoHS certifications and are more than happy to provide these certificates upon request to meet your compliance needs.
Q: Does the price include tax/shipping?
A: Please be informed that the quoted price is exclusive of shipping and tax, ensuring transparency and clarity in our pricing structure.
Q: What famous clients or project cases have you worked with?
A: We are honored to have collaborated with prestigious clients like the State Grid of China, Chint Group, and Xiaomi Group, showcasing our ability to meet the high standards of industry leaders.